Former
"Desperate Housewives" star
Nicollette Sheridan was often unprepared for work, "insulting" to writers and slammed co-star
Teri Hatcher according to show creator
Marc Cherry.

On Wednesday (March 7), Cherry testified in the Sheridan's ongoing wrongful termination and battery trial. His testimony included an account of a conversation he had with Sheridan during the show's first season when she called Hatcher "meanest woman in the world,"
reports Deadline.

And although he described Sheridan as a disruptive presence on the set, Cherry insists that Sheridan's character -- Edie Britt -- was killed off for creative reasons; not because of any differences between Sheridan and himself.

Sheridan also alleges that Cherry "hit her upside the head" during a fight on set. An internal ABC investigation cleared Cherry of any wrongdoing,
reports E! Online.